adj · noun · 4 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/ˈsɛdətɪv/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -ɪv
CMU ARPABET:S EH1 D AH0 T IH0 V
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Calming, soothing, inducing sleep, tranquilizing
Definition source: English Wiktionary via Wiktextract
Topics: medicine, pharmacology, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
An agent or drug that sedates, having a calming or soothing effect, or inducing sleep.
Definition source: English Wiktionary via Wiktextract
Topics: medicine, pharmacology, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adjective satellite
Meaning 3
tending to soothe or tranquilize
Definition source: Princeton WordNet 3.0
Examples
valium has a tranquilizing effect
took a hot drink with sedative properties before going to bed
a drug that reduces excitability and calms a person
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: sedative drug, depressant, downer
Antonyms: none provided
Broader terms: drug of abuse, street drug, medicine, medication, medicament, medicinal drug
Narrower terms: chloral hydrate, glutethimide, Doriden, sedative-hypnotic, sedative-hypnotic drug
History
Etymology
Inherited from Middle English sedatif, from Anglo-Norman sedatif, from Medieval Latin sēdātīvus, which itself likely influenced the modern spelling. By surface analysis, sedate + -ive.
Across languages
Translations
65 source translations are retained for this English entry.